batching
batching
(OP)
Does anyone know the main issues surrounding batching of different types of crude in an onshore pipeline. What additional facilities/ considerations should be made? is it generally feasible in all pipelines. The two types of crude do not differ that much; densities 800 and 850. Are there any good info sources for this subject? thanks





RE: batching
Interface cutting header and valves.
Densitometers, early warning and for final cut.
Check Valves and Double Block & Bleed valves at inlet header.
More power and head for the heavier crude.
Minimize dead legs.
Interface length calculations can be done by Austin-Palfry or similar equations.
If you were plowing a field, which would you rather use? Two strong oxen or 1024 chickens?" - Seymour Cray (1925-1996), father of supercomputing
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RE: batching
I am not expecting much variation in discharge pressure for the two crudes between 90 - 100barg. Also flow would be fixed. I am ramping up to meet final flow and thinking about using pumps in parallel. Is there a case for series pumps here..?
RE: batching
"Make everything as simple as possible, but not simpler." - Albert Einstein (1879-1955)
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http://virtualpipeline.spaces.live.com/
RE: batching
This identification allows them to dose the crudes with the appropriate amount of "snot" (drag reducer) which optimises the flow rates for the available pump pressure.
Snot is expensive and overdosing doesn't further reduce the pipe friction, it just costs more and apparently there is an optimum amount for each crude.
JMW
www.ViscoAnalyser.com